LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Chatfuel - Chatfuel is the best bot platform for creating an AI chatbot on Facebook.
WhatsMany - Send personalised WhatsApp messages in bulk
Message Me - Website to create your contact business card
Promote Route - A Better WhatsApp™ Experience
Amazon Lex - Harness the power behind Amazon Alexa for your own conversational apps.